DEFRO DBE Optima 24: Product Overview & Application Range
The DEFRO DBE Optima 24 is a wall-mounted electric boiler with up to 24 kW for water-based central heating systems. The heat output is provided in three stages of 8 / 16 / 24 kW and can thus be adjusted in steps to match the heating demand.
Technology & Equipment
The factory-standard equipment includes a circulation pump, a 6-liter diaphragm expansion vessel, a safety valve, and electronic controls. In addition, functions for frost protection support and prevention of pump standstill are available.
Everyday Benefits
Thanks to the hydraulic components already integrated in the unit, the DBE Optima can be compactly integrated into a suitably designed heating system. The staged heating output supports demand-based operation, while the control functions support ongoing system operation.
System Integration & Compatibility
The DBE Optima is intended for water-based heating systems with radiators or underfloor heating and can also be operated together with another heat generator. DEFRO describes its use in closed systems and, when properly installed, also in open vented heating systems.
Technical Data at a Glance
| Nominal heat output |
24 kW |
| Power levels |
8 / 16 / 24 kW |
| Mains connection for filter/master data |
400 V / 3-phase / 50 Hz |
| Fuse protection |
40 A |
| Power consumption |
24 kW |
| Max. flow temperature |
80 °C |
| Max. operating pressure |
1.5 bar |
| Expansion vessel |
6 liters, integrated |
| Width |
385 mm |
| Height |
660 mm |
| Depth |
200 mm |
| Weight |
28 kg |
| Energy efficiency class |
D |
Installation
Wall mounting and fixed electrical connection. Electrical connection, fusing, hydraulics, and commissioning may only be carried out by qualified specialists in accordance with the manufacturer's documentation and applicable regulations.
Notes
The 24 kW version is designed for a 400 V three-phase connection. The supply line, fusing, and protective measures must be sized by a qualified electrician in accordance with the high electrical connection load.
Scope of delivery
- 1 × DEFRO DBE Optima 24 electric boiler
Components integrated in the device are part of the factory equipment; additional system and connection components are only included if they are specified in the specific offer.